Play as dressless Peach: Beat Classic Mode with Peach on Intense without losing a single life. After that, beat Boss Battles with Peach on Intense. Once completed, Peach will have no dress on, but rather just her panties.

Unlock Tabuu as a playable character: Beat Tabuu in Boss Battles mode on Intense with every character. After that, beat all stages on Subspace Emissary mode on Intense. After that, Tabuu should become a playable character.

Unlock Tabuu as a playable character: Beat Tabuu in Boss Battles mode on Intense with every character. After that, beat all stages on Subspace Emissary mode on Intense. After that, Tabuu should become a playable character.

Yep, you have fun with that He'd be SSSS tier if he had the same attacks as in the game.

Unlock Tabuu as a playable character: Beat Tabuu in Boss Battles mode on Intense with every character. After that, beat all stages on Subspace Emissary mode on Intense. After that, Tabuu should become a playable character.

Wow.

For a hefty requirement like that, Tabuu had better have EVERY one of his original moves and combos that each pack the force of a regular FS at full function when you play as him. O__O